Christopher Kilmer

• Managed a hybrid IT environment supporting 200 users, 200+ endpoints, 30 servers, 25 switches, and 5 firewalls across six Texas sites.
• Configured and maintained Active Directory and Azure AD / Entra ID for hybrid identity and secure SSO integration.
• Designed and maintained virtualized infrastructures using Hyper-V and SCALE HC3 to optimize uptime and performance.
• Administered Microsoft 365, Exchange Online, and Teams Voice, applying compliance and security policies across the organization.
• Implemented and managed Kaseya 365, Datto RMM, and SentinelOne to strengthen endpoint monitoring, automation, and threat defense.
• Deployed and maintained Microsoft Endpoint Manager (Intune / SCCM) to automate provisioning, updates, and configuration baselines.
• Developed and refined PowerShell scripts to automate provisioning, monitoring, and maintenance, reducing manual effort by 40%.
• Managed Cisco Firepower, Dell, and Ubiquiti networks, including VLANs, VPNs, and endpoint solutions to ensure secure segmentation.
• Implemented backup and DR solutions with Veeam and Synology, achieving zero data loss during three ransomware events.
• Deployed Nagios, Grafana, Prometheus, and Lansweeper for proactive performance monitoring and asset visibility, cutting MTTR by 50%.
• Ensured NIST, CIS, and CMMC 2.0 compliance through continuous monitoring and audits, improving overall security posture.
• Provided Tier 3 escalation for complex issues and mentored Help Desk staff to improve response times and service delivery.

Key Achievements:

• Reduced infrastructure costs by 25% through virtualization and Azure cloud adoption.
• Achieved 99.9% uptime via proactive monitoring and redundancy improvements.
• Decreased phishing incidents by 70% through comprehensive user awareness training.
• Implemented RPO/RTO-compliant backup and disaster recovery across all locations.
• Mentored junior staff in troubleshooting, server management, and system optimization techniques.

• Supported enterprise security operations including vulnerability remediation, access management, and compliance monitoring.
• Worked with cross-functional teams to strengthen IT security posture and ensure regulatory compliance.

• Administered Linux servers within a VMware ESX environment supporting large-scale enterprise operations.
• Managed system builds, patching, and performance monitoring to ensure stability and reliability.

• Provided end-user support and assisted with server/network administration.
• Gained hands-on experience in troubleshooting, systems monitoring, and user training.

• Managed local IT infrastructure including servers, desktops, and telecommunications systems.
• Delivered technical support and implemented system upgrades.

• Maintained enterprise PBX systems and telecom infrastructure.
• Coordinated system upgrades and ensured reliable communications.